Intelligent reflecting surface (IRS) is a potential technology to build programmable wireless environment in future communication systems. In this paper, we consider multi-IRS-assisted multi-base station (multi-BS) multi-user millimeter wave (mmWave) downlink system, exploiting IRS extend mmWave signal coverage blind spots. Considering the impact of on user association multi-BS systems, formula...

For ultra-dense networks, user-centric architecture is regarded as a promising candidate to offer mobile users better quality of service. One the main challenges exploring efficient scheme for user association in network. In this letter, we study dynamic (UCA) problem millimeter wave (mmWave) networks provide reliable connectivity and high achievable data rate. We consider time-varying network ...

Abstract— Consider a wireless system with multiple and independent user-base pairings over some region. Each user tries to greedily optimize its performance, and eventually a simultaneous water-filling fixed point is reached. Here we seek to analytically understand properties of different water-filling fixed points. In so doing we show that water-filling alone does not generally result in optim...

The Transactions in web data often consist of quantitative data, suggesting that fuzzy set theory can be used to represent such data. The time spent by users on each web page is one type of web data, was regarded as a trapezoidal membership function (TMF) and can be used to evaluate user browsing behavior. The quality of mining fuzzy association rules depends on membership functions and since t...